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Color-coded pH Buffer solution for easy identification\u003c\/li\u003e\n\u003cli\u003eAppearance: clear, red liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003cli\u003eFormaldehyde:  50-00-0\u003c\/li\u003e\n\u003cli\u003eMethanol:  67-56-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003epH:  4.01\u003c\/li\u003e\n\u003cli\u003eMelting\/Freezing Point:  ~ 0 °C \/ 32 °F\u003c\/li\u003e\n\u003cli\u003eBoiling Point\/Range:  ~ 100 °C \/ 212 °F\u003c\/li\u003e\n\u003cli\u003eEvaporation Rate:  0.99 (water = 1)\u003c\/li\u003e\n\u003cli\u003eVapor Pressure:  17.027 mm Hg \/ 2.27 kPa at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eRelative Vapor Density:  0.62\u003c\/li\u003e\n\u003cli\u003eSpecific Gravity\/Density:  1.002 g\/mL\u003c\/li\u003e\n\u003cli\u003eDynamic Viscosity:  ~ 1 cP (mPa s) at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eKinematic Viscosity:  ~ 0.998 cSt (mm2\/s) at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eSolubility in Water:  \u0026gt;10000 mg\/L at 25 °C \/ 77 °F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 85%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor coded?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003ctd\u003epH Buffer Calibration reagent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNIST Traceable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eBottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Value(s)\u003c\/td\u003e\n\u003ctd\u003e4.01 ±0.02 pH at 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Remarks\u003c\/td\u003e\n\u003ctd\u003eObserved shelf-life after opening, following recommended storage and use: 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Conditions\u003c\/td\u003e\n\u003ctd\u003e10 - 25 °C (protect from light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HACH","offers":[{"title":"EA (1)","offer_id":51110740853051,"sku":"21-2099-40-EA","price":78.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/21-2099-40.png?v=1785295897"},{"product_id":"buffer-solution-ph-7-00-color-coded-yellow-4-l-poly-bottle-hach-2283556","title":"Buffer Solution, pH 7.00, Color-Coded Yellow, 4 L Poly Bottle, HACH, 2283556","description":"\u003cp\u003e\u003cstrong\u003eHACH® Buffer Solution, pH 7.00, Color-Coded Yellow, 4 L Poly Bottle, 2283556\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAppearance: clear, yellow liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003ePhosphoric Acid, Disodium Salt: 7558-79-4\u003c\/li\u003e\n\u003cli\u003eMagnesium Nitrate: 10377-60-3\u003c\/li\u003e\n\u003cli\u003e3(2H)-Isothiazolone, 5-Chloro-2-Methyl-: 26172-55-4\u003c\/li\u003e\n\u003cli\u003e3(2H)-Isothiazolone, 2-Methyl-: 2682-20-4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003epH: 7.3 at 20 degrees C\u003c\/li\u003e\n\u003cli\u003eMelting\/Freezing Point: ~ 0 °C \/ 32 °F\u003c\/li\u003e\n\u003cli\u003eBoiling Point\/Range: ~ 100 °C \/ 212 °F\u003c\/li\u003e\n\u003cli\u003eEvaporation Rate: 1 (water = 1)\u003c\/li\u003e\n\u003cli\u003eVapor Pressure: 18.002 mm Hg \/ 2.4 kPa at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eRelative Vapor Density: 0.62\u003c\/li\u003e\n\u003cli\u003eSpecific Gravity\/Density: 1.0 g\/mL\u003c\/li\u003e\n\u003cli\u003eDynamic Viscosity: ~ 1 cP (mPa s) at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eKinematic Viscosity: ~ 1 cSt (mm2\/s) at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eSolubility: \u0026gt;10000 mg\/L in water and acid at 25 °C \/ 77 °F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 85%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\t\n\u003ctr\u003e\n\u003ctd\u003eColor coded?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003ctd\u003epH Buffer Calibration reagent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNIST Traceable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eBottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Value(s)\u003c\/td\u003e\n\u003ctd\u003e7.00 ±0.02 pH at 25 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Remarks\u003c\/td\u003e\n\u003ctd\u003eObserved shelf-life after opening, following recommended storage and use: 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Conditions\u003c\/td\u003e\n\u003ctd\u003e10 - 25 °C (protect from light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HACH","offers":[{"title":"EA (1)","offer_id":51110740984123,"sku":"21-2099-41-EA","price":78.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/21-2099-41_83bddb80-42f8-44d4-9f05-036957c64f4a.png?v=1785295899"},{"product_id":"buffer-solution-ph-10-01-color-coded-blue-4-l-poly-bottle-hach-2283656","title":"Buffer Solution, pH 10.01, Color-Coded Blue, 4 L Poly Bottle, HACH, 2283656","description":"\u003cp\u003e\u003cstrong\u003eHACH® Buffer Solution, pH 10.01, Color-Coded Blue, 4 L Poly Bottle, 2283656\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAppearance: clear, blue liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eFormaldehyde: 50-00-0\u003c\/li\u003e\n\u003cli\u003eMethanol: 67-56-1\u003c\/li\u003e\n\u003cli\u003eCuprate(2-), [29H,31H-Phthalocyanine-C,C-Disulfonato(4-)-N29,N30,N31,N32]-, Disodium: 1330-38-7\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003epH: 10 at 20 degrees C\u003c\/li\u003e\n\u003cli\u003eMelting\/Freezing Point:  ~ 0 °C \/ 32 °F\u003c\/li\u003e\n\u003cli\u003eBoiling Point\/Range:  ~ 100 °C \/ 212 °F\u003c\/li\u003e\n\u003cli\u003eEvaporation Rate:  0.76 (water = 1)\u003c\/li\u003e\n\u003cli\u003eVapor Pressure:  17.477 mm Hg \/ 2.33 kPa at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eRelative Vapor Density:  0.62\u003c\/li\u003e\n\u003cli\u003eSpecific Gravity\/Density:  0.990 g\/mL\u003c\/li\u003e\n\u003cli\u003eDynamic Viscosity:  ~ 1 cP (mPa s) at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eKinematic Viscosity:  ~ 1.01 cSt (mm2\/s) at 20 °C \/ 68 °F\u003c\/li\u003e\n\u003cli\u003eSolubility:  \u0026gt;1000 mg\/L in water and acid at 25 °C \/ 77 °F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 85%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor coded?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003ctd\u003epH Buffer Calibration reagent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNIST Traceable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eBottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Value(s)\u003c\/td\u003e\n\u003ctd\u003e10.01 ±0.02 pH at 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Conditions\u003c\/td\u003e\n\u003ctd\u003e10 - 25 °C (protect from light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HACH","offers":[{"title":"EA (1)","offer_id":51110741016891,"sku":"21-2099-42-EA","price":78.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/21-2099-42_61e906ec-f697-46fb-9b15-70246883775e.png?v=1784699868"},{"product_id":"ph-4-01-buffer-individual-use-pouches-10-x-15-ml-orion-910410-wa","title":"pH 4.01 Buffer Individual Use Pouches, 10 x 15 mL, Orion, 910410-WA","description":"\u003cp\u003e\u003cstrong\u003eThermo Scientific™ Orion™ \u003c\/strong\u003e\u003cstrong\u003epH 4.01 Buffer Individual Use Pouches, 10 x 15 mL, 910410-WA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure fresh, ready-to-use standards for pH calibration with Orion™ pH Buffer Individual Use Pouches\u003c\/li\u003e\n\u003cli\u003eColor coded: pH 4.01 buffer is pink, pH 7.00 buffer is yellow, and pH 10.01 buffer is blue\u003c\/li\u003e\n\u003cli\u003ePackaged with buffer\/temperature tables for accurate calibrations and NIST traceability\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9000 quality standards\u003c\/li\u003e\n\u003cli\u003ePouches are 15 mL each and are available in 10 packs or 25 packs\u003c\/li\u003e\n\u003cli\u003eAppearance:  light red liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003cli\u003ePotassium Hydrogen Phthalate:  877-24-7\u003c\/li\u003e\n\u003cli\u003ePotassium Hydroxide:  1310-58-3\u003c\/li\u003e\n\u003cli\u003eAmaranth Red No. 27:  915-67-3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003epH:  4.01\u003c\/li\u003e\n\u003cli\u003eBoiling Point\/Range:  ~ 100 °C \/ 212 °F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Thermo Fisher Scientific","offers":[{"title":"PK (1)","offer_id":51110743474491,"sku":"21-2112-04-PK","price":49.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/21-2112-04_68da78ae-2f91-47df-9c85-db65c90c4464.png?v=1784699943"},{"product_id":"ph-7-00-buffer-individual-use-pouches-10-x-15-ml-orion-910710","title":"pH 7.00 Buffer Individual Use Pouches, 10 x 15 mL, Orion, 910710","description":"\u003cp\u003e\u003cstrong\u003eThermo Scientific™ Orion™ pH 7.00 Buffer Individual Use Pouches, 10 x 15 mL, Orion, 910710\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure fresh, ready-to-use standards for pH calibration with Orion™ pH Buffer Individual Use Pouches\u003c\/li\u003e\n\u003cli\u003eColor coded: pH 4.01 buffer is pink, pH 7.00 buffer is yellow, and pH 10.01 buffer is blue\u003c\/li\u003e\n\u003cli\u003ePackaged with buffer\/temperature tables for accurate calibrations and NIST traceability\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9000 quality standards\u003c\/li\u003e\n\u003cli\u003ePouches are 15 mL each and are available in 10 packs or 25 packs\u003c\/li\u003e\n\u003cli\u003eAppearance:  light yellow liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003cli\u003eSodium Phosphate, Dibasic:  7558-79-4\u003c\/li\u003e\n\u003cli\u003ePotassium Dihydrogen Phosphate:  7778-77-0\u003c\/li\u003e\n\u003cli\u003e5-Bromo-5-Nitro-1,3-Dioxane:  30007-47-7\u003c\/li\u003e\n\u003cli\u003eFD \u0026amp; C Yellow No. 5:  1934-21-0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003epH:  7.01\u003c\/li\u003e\n\u003cli\u003epH Range:  5.8-8.2\u003c\/li\u003e\n\u003cli\u003eBoiling Point\/Range:  ~ 100 °C \/ 212 °F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Thermo Fisher Scientific","offers":[{"title":"PK (1)","offer_id":51110743507259,"sku":"21-2112-07-PK","price":49.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/21-2112-07_f41c9fc7-f9aa-4089-8e26-5ca57b94fd60.png?v=1784699945"},{"product_id":"ph-10-01-buffer-individual-use-pouches-10-x-15-ml-orion-911010","title":"pH 10.01 Buffer Individual Use Pouches, 10 x 15 mL, Orion, 911010","description":"\u003cp\u003e\u003cstrong\u003eThermo Scientific™ Orion™ pH 10.01 Buffer Individual Use Pouches, 10 x 15 mL, 911010\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure fresh, ready-to-use standards for pH calibration with Orion™ pH Buffer Individual Use Pouches\u003c\/li\u003e\n\u003cli\u003eColor coded: pH 4.01 buffer is pink, pH 7.00 buffer is yellow, and pH 10.01 buffer is blue\u003c\/li\u003e\n\u003cli\u003ePackaged with buffer\/temperature tables for accurate calibrations and NIST traceability\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO 9000 quality standards\u003c\/li\u003e\n\u003cli\u003ePouches are 15 mL each and are available in 10 packs or 25 packs\u003c\/li\u003e\n\u003cli\u003eAppearance:  light blue liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos.:\n\u003cul\u003e\n\u003cli\u003eWater:  7732-18-5\u003c\/li\u003e\n\u003cli\u003eSodium Carbonate:  497-19-8\u003c\/li\u003e\n\u003cli\u003eSodium Bicarbonate:  144-55-8\u003c\/li\u003e\n\u003cli\u003eMethylparaben:  99-76-3\u003c\/li\u003e\n\u003cli\u003eFD \u0026amp; C Yellow No. 1:  3844-45-9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003epH Range:  8.51 to 11.51\u003c\/li\u003e\n\u003cli\u003eBoiling Point\/Range:  ~ 100 °C \/ 212 °F\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Thermo Fisher Scientific","offers":[{"title":"PK (1)","offer_id":51110743540027,"sku":"21-2112-10-PK","price":49.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/21-2112-10.png?v=1784699947"},{"product_id":"pure-water-ph-buffer-b-ph-4-10-4-x-475-ml-orion-700402","title":"Pure Water pH Buffer B pH 4.10, 4 x 475 mL, Orion, 700402","description":"\u003cp\u003e\u003cstrong\u003eThermo Scientific™ Orion™ Pure Water® pH Buffer B pH 4.10, 4 x 475 mL, 700402\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow ionic strength buffer\u003c\/li\u003e\n\u003cli\u003eAppearance: clear liquid\u003c\/li\u003e\n\u003cli\u003eCAS Nos:  does not contain materials at hazardous levels\u003c\/li\u003e\n\u003cli\u003eIncreases measurement accuracy\u003c\/li\u003e\n\u003cli\u003eReduces electrode drift\u003c\/li\u003e\n\u003cli\u003eEliminates contamination of 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The buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution.  They have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.  The buffers are packaged in light block bottles which prevent any oxidation from UV light that could alter the buffer value.\u003c\/p\u003e \u003cp\u003eThe premium quality pH buffers are produced in accordance with ISO 3696\/BS3978 standards using hihg purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. 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